Safety device for car-hauls.



PATEN'IED FEB. 19, 1907.

v W. W. MAGFARREN.

SAFETY DEVICE FOR CAR HAULS.

@PPLIUATION FILED MAY 3. 1906.

No. 844,876. 'PATBNTED FEB. 19, 190-7 W. W. MAGFARREN. SAFETY DEVICE FOR GAR HAUL-S.

APPLIUATION FILER) MAY 3, 1906.

2 snms snnm 2.

WITNESSES. I INVENTOH. 9. WWI/M mm; 401 Mafia Q Z411; rwiweb UNITED sTATns PATENT OFFICE.

SAFETY DEVICE FOR CAR-HAULS.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Application filed May 3,1906. Serial No. 316.117.

To all whom, it may concern.-

Be it known that I, WALTER W. Macram- REN, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Safety Device for Car-Haul and I do hereby declare the following to he a full, clear, and exact description thereof.

My invention relates to a safety device for car-hauls, its object being to provide a simple and inexpensive device of this character which will act instantaneously in case of the breakage of the chain, while at the same time the buckling of the chain is revented throughout its length, thereby relieving the strain on the chainand gieatly reducing the amount of damage in case of the parting of the chain at any point when loaded with cars.

To these ends my invention comprises the novel features hereinafter set forth and claimed.

In the accompanying drawings, Fi ure iis a side view of an ordinary car-hau of the character to which my invention is applicable. Fig. 2 is an enlarged view of a portion of the chain, showing one form of safety vice as applied thereto. Fig. P is a crosssection on the line 3 3, Fig. 2. Fig. i is a view showin the safety device in action. Fig. 5 is a sir e view of a car-haul, showing a modified form of my invention Fi 6 is an enlar ed plan View of a portion of tie chain and t e conduit in the modified form of my invention; and Fig. 7 is a cross-section on the line 7 7, Fig. 6.

Like numerals indicate like parts.

In the drawings the numeral 2 designates a suitable car-haul, which is mounted and driven in the ordinary way by tl'iesprocketwheels 3 and 4 at the upper and lower ends thereof, one of said s rocket-wheels being connected with a, suitab e en ine.

The chain 5 is'composed u links connected in the ordinary manner, and at intervals said chain is provided with the horns or )rojections 6, which are adapted to cnga e t c axle or other art of the car and rope it u the incline o i the haul. Securer at suitabie intervals to the chain are the pins 7, which form axles carrying the wheels 8, which are adapted to travel in the conduit 9. This conduit 9 extends substantially from the bottom tothe top of the haul and may heformed of an le-irons connected togetherin any suit abe manner. The wheels 8 have! within the conduit 9, and the flanges 10 on said wheels, together with the ends 11 of the pins 7, guide the wheels and prevent their disengagement from the conduit, there bein a slight endwise as well as vertical play within the coruiluit.

Loosely mounted on the pin 7 are the safety stops or cams 12, which are preferably serrated on their circular edges, as. at 13.

Under ordinary circumstances in the opcr ation of the car-haul the'chain carries the cars to the top of the haul, where the cars are released, and the chain then passes with the horns or projections 6 in an inverted osition down to the lower end of the haul. he upgoing cars are engaged by the horns or pro- 3ections 6, and the loaded cars are in this Way carried up the incline, the wheels 8 travelin on the lower flanges of the conduit ,9, sai wheels having, stated, a certain amount of play between the up is! and loweriianges of said conduit. If, however, the chain should break or part at any point in its ascent, the revolution of the wheels 8 is reversed, and immediately the cams 12 are wedged or forced into the position shown in Fig. 4, where they act to arrest the descent oi the chain and hold it securelyat different points throughout its length, so that-there is no opportuiutyfor any further slippin a)! sliding of the chain in the conduit; he chain when thus arrested prevents the cars engaged at different points from running to the bottom of the haul and causing great damage and destruction of property.

While the action of the cams is very quick and positive, at the same time, as the sto page due to the frictional contact of t e cams with the lower-flange of the conduit, a certain amount of sli pin or spring isallowed, thus reducing t e s 100k to the struc* ture. The sto s or cams bejn located at intervals throu out the lengt of the chain act at such points, and the strain is not all located at one point, which is the case in some devices of this character.

In case the cams should become gummed or stick for any reason when the chain breaks, they will be carried to the position indicated in dotted lines, Fig. 4, and engage the upper flange of the conduit. In no case, however, can the cams make a complete revolution in the conduit in case they stick, and as a cons1 uence they are always in position to act n Fig. 5 I have illustrated a modified form of my invention in which a safety-stop 15 is llO 

